From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 5B038C71136 for ; Fri, 13 Jun 2025 18:24:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:References:From:To:Cc: Subject:Message-Id:Date:Mime-Version:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=hFmUiK+ih26KecCM8JFUWBXdFJR38zXEqeL47ZmRFA8=; b=Me7IPu10sboLgS oDgyw9uAAnEqFEa/3Q6k9BHwL72cdOIgzYlQilKbcq2jtNtBPJ9optwZccnii1hhcuRFYZ6YUT7W/ mWPOx1Ofip+FBtUr7f7smI6OrBmjTktpvXP0fnFimJzoFxRCLCWMpY5WZJ0NXZPKEzo5I4/IcdUU3 8MzrlM6NkwI3+rK9KNTEPGAhu/EftkqwfG8UrsnoBd0JyJIkfWDYK8SF2ef16Aq1W7zKUHUeal95o zrEaFMacsmciuO0bsgOg3FJla6PzWM9t7LplLQxbprwfPjq7YDlEhg8oFT+6W5/mCw9wVjWDmJCCS vc0KfTk5DSq1NEdDkOGA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1uQ94p-0000000HJF6-2O1q; Fri, 13 Jun 2025 18:24:31 +0000 Received: from mail-wr1-x42f.google.com ([2a00:1450:4864:20::42f]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1uQ7t6-0000000H8mD-1y3x for linux-riscv@lists.infradead.org; Fri, 13 Jun 2025 17:08:21 +0000 Received: by mail-wr1-x42f.google.com with SMTP id ffacd0b85a97d-3a528e301b0so247325f8f.1 for ; Fri, 13 Jun 2025 10:08:19 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ventanamicro.com; s=google; t=1749834498; x=1750439298; darn=lists.infradead.org; h=in-reply-to:references:from:to:cc:subject:message-id:date :content-transfer-encoding:mime-version:from:to:cc:subject:date :message-id:reply-to; bh=Vue51+MgfibcA28it1/xkcw6YG/3bQrUPQvFZm0rgdk=; b=hj4G8zFMtA72Qu7j5bvyW/kaeCXvvRrpqk+MeKTQzPVFmRGaNqquhtSuk21+LXl9Lj 1JlZL6Sj/5tafTjtdElAU/1Glspsn0hsyfluTlwg4AJA3fVa2Ib+Qy3G6r+QuH2J5/zw UEJwRfrBPG2fhsmS+H7dNpCyyeyaW5ph10Qa27lu2oy8R4PLMRcJneJuyD5Blllld3By W7HN3H1cnWAsgBHVbSkuxy/vUX+muyW8msyxsGABAIo1QQSqofmTya5DFBwiLZENZ0il /dJVeOw4+2hFDbqbWvxjGCyFa8r+EafWAHIHt9ObX81a60+pwGJn8uZWmc8HguvrM8Jn f6fg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1749834498; x=1750439298; h=in-reply-to:references:from:to:cc:subject:message-id:date :content-transfer-encoding:mime-version:x-gm-message-state:from:to :cc:subject:date:message-id:reply-to; bh=Vue51+MgfibcA28it1/xkcw6YG/3bQrUPQvFZm0rgdk=; b=KQDoblJX0b+usEvpBT5rrAwhGw0fIXc/4BCfU4XnBMazl41zuxvRTddFLBJyNlGq/R punAgH7r2S8/aO5NbkGwS4f1rmjsO4+aSFQsDDdUDWlNsfSx6KWhZktAPKTEu/alrkrb AiBnfbrbV7/f/hQd9YZ4pwluvEN9a2T5NWm7EKKFLH0Zi027dxrvgIsMhiPuP9niegA5 AllX3WT0fgN8vcE4+xHs+S82YsratDlQHbrwED3SYCxPfq1KLsvByWWXgr3G+R62hYHk 9i91wSSVRO55QN9x0O0Th1gZGdZCy67fpvS21icqoIHc3MvZ/AoqObhBgr99qnac+qnB zLyA== X-Gm-Message-State: AOJu0YyrEsHmnko806QIFT69k3EaTi+7WM+4Y7Ob1yJp+lkxyYfWGouo BnGCIzLcvrb5T5EDbR4RtdgGvss/nnUvYVCfROy1Tr6IBJciha2uZmBD8pjoTEb67W4= X-Gm-Gg: ASbGncscrQ47cBnInoYGDuC9vFQDahc27whcQZxeVHiMHBQsDH6W0789GQguXUQpjxt olm9MDYJRg1gAdluIDZbxmdE7PxetBF3t7W8OgjfZXRV+yOj9U0RVXVl8uqWiSOWSXO+xr1y9vv 6oS+8fnTrX0L33M+JNeRJE7cv7mzywDJJ4v/tKq7BQUv13S8sieGozN2xTtjzeGhz2Nke4jBknL tQpArsz+k8Hy6VqIKsDjfZDiLgl/xo8H581nYc/JRSfu7ZsjU0mhMi71e3pK0cpnth8ur3FR9jn DecSIVXoDLa8bCTkher/QCuJmIz+0tscaz8YXdzxJ7itG6jqDYHX9EHqOZwTi7EP5KaFmw== X-Google-Smtp-Source: AGHT+IHfUlqWvloCSvdoAAhCyaKAAKDpychdD+BfdH2KIKQft+7sNerlZ4YyA9yLV1CZzyAdw2xnjQ== X-Received: by 2002:a05:6000:1789:b0:3a3:7be3:d0f3 with SMTP id ffacd0b85a97d-3a5723aea0cmr190535f8f.14.1749834498233; Fri, 13 Jun 2025 10:08:18 -0700 (PDT) Received: from localhost ([2a02:8308:a00c:e200:3c9f:2b68:ce36:f64b]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-3a568b2c957sm2820587f8f.76.2025.06.13.10.08.17 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 13 Jun 2025 10:08:17 -0700 (PDT) Mime-Version: 1.0 Date: Fri, 13 Jun 2025 19:08:17 +0200 Message-Id: Subject: Re: [PATCH 2/2] RISC-V: make use of variadic sbi_ecall Cc: , , "Paul Walmsley" , "Palmer Dabbelt" , "Albert Ou" , "Alexandre Ghiti" , "Atish Patra" , "Andrew Jones" , =?utf-8?q?Cl=C3=A9ment_L=C3=A9ger?= , "Anup Patel" To: "David Laight" From: =?utf-8?q?Radim_Kr=C4=8Dm=C3=A1=C5=99?= References: <20250612145754.2126147-2-rkrcmar@ventanamicro.com> <20250612145754.2126147-4-rkrcmar@ventanamicro.com> <20250613115459.6293f929@pumpkin> <20250613165226.751541c6@pumpkin> In-Reply-To: <20250613165226.751541c6@pumpkin> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250613_100820_518205_15BD24E2 X-CRM114-Status: GOOD ( 11.59 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org MjAyNS0wNi0xM1QxNjo1MjoyNiswMTowMCwgRGF2aWQgTGFpZ2h0IDxkYXZpZC5sYWlnaHQubGlu dXhAZ21haWwuY29tPjoKPiBPbiBGcmksIDEzIEp1biAyMDI1IDE2OjEwOjUyICswMjAwCj4gUmFk aW0gS3LEjW3DocWZIDxya3JjbWFyQHZlbnRhbmFtaWNyby5jb20+IHdyb3RlOgo+Cj4gLi4uCj4+ IFRoZSBtYWNybyB3aWxsIHJlc3VsdCBpbiB0aGUgc2FtZSBhcmd1bWVudHMgYXMgYmVmb3JlLCBh bmQgaXQgaXMgd2hhdAo+PiB0aGUgc2JpX2VjYWxsIGFjdHVhbGx5IHNob3VsZCBkby4KPgo+IFVn Zy4uLgo+IEFyZSB5b3UgdXNpbmcgcHJlLXByb2Nlc3NvciAnbWFnaWMnIHRvIGFkZCBhIHBpbGUg b2YgemVyb3MgYW5kIHRoZW4KPiBzZWxlY3QgdGhlIGZpcnN0ICduJyBhcmd1bWVudHM/CgpTYWRs eSwgeWVzLiAgVGhlIHplcm9zIHNob3VsZCBoYXZlIG5ldmVyIGJlZW4gaW50cm9kdWNlZCBpbiB0 aGUgY29kZSwgc28KSSdtIGhpZGluZyB0aGVtIGZvciB0aGUgbW9tZW50LgpJIHBsYW5uZWQgdG8g cmVtb3ZlIHRoZSB1c2VsZXNzIHplcm9zIGluIGZ1dHVyZSBwYXRjaGVzLgoKPiBUaGF0IG91Z2h0 IHRvIGJlIGJhbm5lZCBhcyBlcnJvciBwcm9uZS4KClNvdW5kcyByZWFzb25hYmxlIHRvIG1lLiAg SSB3aWxsIHRyeSB0byBmaXggdGhlIGluc2FuZSB0cmFjZXBvaW50IGJsb2F0LAphbmQgc2VuZCBh IHYyIHRoYXQgZmlsbHMgb25seSB0aGUgY29ycmVjdCBhbW91bnQgb2YgcmVnaXN0ZXJzIGZvciB0 aGUKZWNhbGwgaW5zdHJ1Y3Rpb24uCgo+IEkgdGhpbmsgdGhlIG9uZSBmb3Igc3RybmNweSgpIHJl bW92ZXMgdGhlIGltbWVkaWF0ZSBjb21waWxlIGVycm9yIGZvcjoKPiAJc3RybmNweShkZXN0LCBz cmMsIDEsIDIpOwoKSSB3b3VsZCBoYXZlIHByZWZlcnJlZCBpZiBzYmkuaCBoYWQgYSB3cmFwcGVy IGZ1bmN0aW9uIGZvciBlYWNoIFNCSQpmdW5jdGlvbiwgYW5kIHdlIG5ldmVyIGFsbG93ZWQgZGly ZWN0IGludm9jYXRpb24gb2YgdGhlIGVjYWxsCmluc3RydWN0aW9uIG91dHNpZGUgb2YgdGhlIGxp YnJhcnkuCgpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwps aW51eC1yaXNjdiBtYWlsaW5nIGxpc3QKbGludXgtcmlzY3ZAbGlzdHMuaW5mcmFkZWFkLm9yZwpo dHRwOi8vbGlzdHMuaW5mcmFkZWFkLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2xpbnV4LXJpc2N2Cg== From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-wr1-f41.google.com (mail-wr1-f41.google.com [209.85.221.41]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 1579B22370A for ; Fri, 13 Jun 2025 17:08:19 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.221.41 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1749834502; cv=none; b=Y/lpDWXUFY0DrzisknXnYnoQuFsim1RyrPnUZ4gXK31VfcxWYrxkd8k16X6DNYuqreXi0AmcSLPq9HK9oZFK7O/fprX+/1k0TuVgStRSvqIgxkRfZlLGS79/DPQ773zp+49Nnuy6qxymrLVHGnYOwCLGKg9f8ubFSfPz1qV3lCU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1749834502; c=relaxed/simple; bh=xmOtvu3aUqQL7JZa5bDY6mjNVveVay4n816Uni9tUbA=; h=Mime-Version:Content-Type:Date:Message-Id:Subject:Cc:To:From: References:In-Reply-To; b=Hjvxsnfhj9i67cnpe1Aies00EIi2/O59dlWWq6JQBYpYfAbdp3tLfmacwn4LcuZnNp/JvDSkzcX2j57VmtG2drJIFj+CgyF/Z9d4MN5TL2Sxsi8nXQmYfw3zKyo0pHmKB+LpPPowyVVBZvWJhdf/l6fo3eBi1Li2JLu2CQLacLs= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=ventanamicro.com; spf=pass smtp.mailfrom=ventanamicro.com; dkim=pass (2048-bit key) header.d=ventanamicro.com header.i=@ventanamicro.com header.b=o/KvmdMt; arc=none smtp.client-ip=209.85.221.41 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=ventanamicro.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=ventanamicro.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=ventanamicro.com header.i=@ventanamicro.com header.b="o/KvmdMt" Received: by mail-wr1-f41.google.com with SMTP id ffacd0b85a97d-3a4eb4acf29so257231f8f.0 for ; Fri, 13 Jun 2025 10:08:19 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ventanamicro.com; s=google; t=1749834498; x=1750439298; darn=vger.kernel.org; h=in-reply-to:references:from:to:cc:subject:message-id:date :content-transfer-encoding:mime-version:from:to:cc:subject:date :message-id:reply-to; bh=Vue51+MgfibcA28it1/xkcw6YG/3bQrUPQvFZm0rgdk=; b=o/KvmdMtkmEn6grtZdx+RZD0p2Ej9e6Cv67pfHGqDuMu62qA+kHjanyzg+nU1VavtK sA9ILWDXAkoypodY5YBJvfcp2h5W1f/5uqDhhADMhiFGx5m7QcUajoqIA3toOdMX0wVe xJCCC77VAvdDzn10N39k6wvFfCgtmNCLnSic8kxvModt8DiXwzrqJ8GpEjsS1JPrqhOp 4jKLLU3YT7R9lqqk3B3rl3vwq8KgdfCmVq2vhNmAkuxw1UIrb4DFyc1EXl2UnTi+HIUj qKtHjnPUm0Ugh74OuppgpJm/x6Sjp/Vf2y+oj0B8ALSOJ4BunMKJlP4S2sIw4bon1ssR Ox+A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1749834498; x=1750439298; h=in-reply-to:references:from:to:cc:subject:message-id:date :content-transfer-encoding:mime-version:x-gm-message-state:from:to :cc:subject:date:message-id:reply-to; bh=Vue51+MgfibcA28it1/xkcw6YG/3bQrUPQvFZm0rgdk=; b=hsC4gqD+SmfkOg0G/kmqxLNnET2QOv/kT4I4M9xHMvNgmztuLJNMkyeh2jLrZY1q5i wYYFCU2ZmHrXqimzEIwqKZSLxwApmm4+U4+Wj7ugbK/3xFytQPIV6ZYdsSHKjfAeNND4 qjCbkQ4McpkaSix5TlRY6AdPGe3XQWcnsiEH3D8vNa3JiewxcXpQ0CHj+J8I1F5ixMBH clMR2OUkfzByA3fepFLk5dtZ3NGYYk1hrBYlUir680d8xS0OCACQIKxh9dQLTgiO/AVK IPcTLxKa3mbSYr0aZhFHTqIRiZOIz/3NOFZkchs0T4JV6YvJkPsljUI8MRy16pzXNxp1 QKzg== X-Forwarded-Encrypted: i=1; AJvYcCVR46YoVdNd2dhG4azEyKWWk40cneZ/tPYfII2r7BJq7Ug+bdCahrajRAdv+082CparcKWH5zTq0guk3Yw=@vger.kernel.org X-Gm-Message-State: AOJu0Yy1tgfdnGQ5WSo5OLS6e5kPFb2Skghf/a1LELwDjeXsN6BdD6Ph OBXXhtu9mxCWMcMFojAE9KI/1HRtA2M78bknCDncGBSTkTfDP11WVTLYZ99puWlp4sJlTsP/UKA n/cLb9wE= X-Gm-Gg: ASbGncvyOKn9qromE4EvHaZJDRg8rtwBvsOubtmDLxfWvQKdwqBg/WTDI1K/Q2s6mJd Y1p00EfjQSYMyG9i6GWKZBoxvg+1t+yFjChAe20iX0jVJoBvtUG7HYxaPql1BVx6osGHaKV+TRv YNzldY0d/TOl2SKOSuHFnnibQnBRsL1t38Qi3Z9cvJsGGVJE8a6XKYJG5MQQikS+06jNjtkU2R6 HIpvbjnKE71kNKwrXBT1BDg7QzoEA4oCqBr6/prHhSr7ourUceYIRHEFo/hDBF2N9oMgkK6rIZI NLBtrmI6Hy3kfnfnLSGMBkUumEoN6UGVyr7BAEv8BrAdckhFSNeDexbJq3gngtYNwVdM3Q== X-Google-Smtp-Source: AGHT+IHfUlqWvloCSvdoAAhCyaKAAKDpychdD+BfdH2KIKQft+7sNerlZ4YyA9yLV1CZzyAdw2xnjQ== X-Received: by 2002:a05:6000:1789:b0:3a3:7be3:d0f3 with SMTP id ffacd0b85a97d-3a5723aea0cmr190535f8f.14.1749834498233; Fri, 13 Jun 2025 10:08:18 -0700 (PDT) Received: from localhost ([2a02:8308:a00c:e200:3c9f:2b68:ce36:f64b]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-3a568b2c957sm2820587f8f.76.2025.06.13.10.08.17 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 13 Jun 2025 10:08:17 -0700 (PDT) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=UTF-8 Date: Fri, 13 Jun 2025 19:08:17 +0200 Message-Id: Subject: Re: [PATCH 2/2] RISC-V: make use of variadic sbi_ecall Cc: , , "Paul Walmsley" , "Palmer Dabbelt" , "Albert Ou" , "Alexandre Ghiti" , "Atish Patra" , "Andrew Jones" , =?utf-8?q?Cl=C3=A9ment_L=C3=A9ger?= , "Anup Patel" To: "David Laight" From: =?utf-8?q?Radim_Kr=C4=8Dm=C3=A1=C5=99?= References: <20250612145754.2126147-2-rkrcmar@ventanamicro.com> <20250612145754.2126147-4-rkrcmar@ventanamicro.com> <20250613115459.6293f929@pumpkin> <20250613165226.751541c6@pumpkin> In-Reply-To: <20250613165226.751541c6@pumpkin> 2025-06-13T16:52:26+01:00, David Laight : > On Fri, 13 Jun 2025 16:10:52 +0200 > Radim Kr=C4=8Dm=C3=A1=C5=99 wrote: > > ... >> The macro will result in the same arguments as before, and it is what >> the sbi_ecall actually should do. > > Ugg... > Are you using pre-processor 'magic' to add a pile of zeros and then > select the first 'n' arguments? Sadly, yes. The zeros should have never been introduced in the code, so I'm hiding them for the moment. I planned to remove the useless zeros in future patches. > That ought to be banned as error prone. Sounds reasonable to me. I will try to fix the insane tracepoint bloat, and send a v2 that fills only the correct amount of registers for the ecall instruction. > I think the one for strncpy() removes the immediate compile error for: > strncpy(dest, src, 1, 2); I would have preferred if sbi.h had a wrapper function for each SBI function, and we never allowed direct invocation of the ecall instruction outside of the library.